Tissue products containing softness

ABSTRACT

A composition for cellulostic fibers containing amino silicone to impart improved hand feel. The composition may be included in a lotion applied to tissue paper and may include a hydrophilic softener. A carrier for trace substances, fragrances, vitamin E, aloes and colouring agents may also be used. Such carrier may comprise microcapsules.

FIELD OF INVENTION

[0001] This invention relates generally to tissue paper, and morespecifically to tissue paper having a soft tactile feel, a process forthe production of tissue paper having softeners and particularcompositions of said tissues.

BACKGROUND TO THE INVENTION

[0002] Tissues are widely used for a variety of uses including nosecare, removal of cosmetics, eye glass cleaning and wipe ups around thehome. Such tissues have gained widespread use for a variety of reasonsincluding the relative inexpensiveness of the product and thusdisposability of the tissues.

[0003] Such tissue papers require a variety of characteristics dependingon their usage. For example softness is a major benefit when the tissuepapers are used for nose care or removal of cosmetics. Tissues used forwipe ups, however, generally require absorbency while non-smearing is apreferred benefit when using tissue papers for eyeglass cleaning.Generally speaking most individuals prefer strength of the product formost applications.

[0004] Softness of tissues can be imparted to the substrate paper by avariety of means including mechanical and chemical processes. Theresiliency, flexibility or smoothness of the tissue may perceivesoftness of the product.

[0005] Mechanical softness may be imparted to the paper by a variety ofmeans including calendarizing which affects the loft or the bulkiness ofthe paper.

[0006] Chemical softness may be imparted to a tissue paper by means ofadding or imparting chemical compounds.

[0007] For example U.S. Pat. No. 4,950,545 describes facial tissuescontaining a silicone compound which is incorporated into the tissuewith an aqueous carrier having a smear index of 1.0 or less, a lintreduction index of 5 or greater, and sink time no more than 30 secondgreater than sink time of the same facial tissue without the siliconcompound.

[0008] Moreover U.S. Pat. No. 5,059,282 teaches a tissue papercomprising cellulostic fibres and an effective amount of polysiloxanematerial, said polysiloxane being uniformly disposed on the outwardlyfacing surfaces of the tissue paper, said effective amount ofpolysiloxane being from about 0.004% to about 2% polysiloxane based onthe dry fibre weight of said tissue paper, said polysiloxane having aviscosity of about 25 centistokes or more, said tissue paper after agingtwo weeks after its manufacture has a wetting time of two minutes orless.

[0009] Moreover U.S. Pat. No. 5,552,020 discloses tissue products madeby adding one or more softeners/debonders and a silicon glycol copolymerof the paper making fibres at the wet end of the tissue machine, priorto the formation of the tissue web. Suitable softeners/debondersdisclosed include organo-reactive polysiloxanes, quaternary ammoniumcompounds, quaternized protein compounds, phospholipids and siliconquaternaries. One such binder material is starch.

[0010] U.S. Pat. No. 5,059,282 also discloses the use of surfactants.Specific surfactants used in tissue paper are disclosed in an articleentitled “The Roll of Silicones in Non-Woven Fabric Applications” by A.J. Sabia and R. P. Metzler in NonWovens Industry, September 1983, pp. 16to 22 namely on page 20,

[0011] “Surfactants selected for polymer emulsification can also have animportant effect on performance of the organo-reactive silicones.”

[0012] The use of a 2% amino-silicone injected into a pulp slurry hasbeen taught in U.S. Pat. No. 5,908,707 where a conventional tissuetissue/towel paper substrate is formed, dried and creped in aconventional manner in the formation of wet-like cleaning wipes.

DISCLOSURE OF INVENTION

[0013] It is an object of this invention to provide tissues havingimproved softness characteristics.

[0014] It is another object of this invention to provide creped papertissues having improved softness characteristics for facial, hand andrelated personal uses.

[0015] It is a further object of this invention to provide a optimumcombination of features to the substrate tissue in the softness and feelof the product by applying a composition to the tissue with low dosagecosts. It is a further object of this invention to provide an improvedmethod of producing same.

BRIEF DESCRIPTION OF DRAWINGS

[0016] FIGS. 1(a) and (b) generally illustrate a flexographic press andflexographic closed cavity fountain system respectively.

[0017]FIG. 2 generally illustrates a sprayer for coating the moving webof paper.

[0018]FIG. 3 illustrates a roto gravure press.

[0019]FIG. 4 is a chart for mixtures prepared for lotionizing trials.

[0020]FIG. 5 is a chart including viscosity and surface tension of theformulas by item codes.

[0021]FIG. 6 is a softness verses dose of silicon lotions chart whichhave been flexo printed unto Scotties Supreme.

[0022]FIGS. 7a and 7 b are charts showing softness of Scotties Supremeverses various lotions and doses.

[0023]FIG. 8 is a chart entitled bulk of Scotties Supreme with dose ofvarious lotions applied.

[0024]FIG. 9 is a chart entitled stretch of Scotties Supreme withvarious lotions and doses.

[0025]FIG. 10. is a chart entitled tensile strength of Scotties Supremewith various lotions.

[0026]FIG. 11 is a illustration of the apparatus used for application ofmicrocapsules to tissue paper.

[0027]FIG. 12 is a detailed diagram of a spray system.

[0028]FIG. 13 is a table showing test results for Lotion FormulaAM60/PPG40 applied by rotogravure printing with a 50 millinch hexagonalpattern cylinder at various RPM's and the handfeel results.

[0029]FIG. 14 shows the physical test results for the bottom middle andtop ply web referred to in FIG. 13.

[0030]FIGS. 15 and 16 show test results utilizing mineral oil basedlotions and polyethylene glycol based lotions with fragrance.

[0031]FIG. 17 shows test results utilizing a carrier with DC 8600 andfragrance.

[0032]FIG. 18 is a table showing results of FIG. 17.

BEST MODE FOR CARRYING OUT THE INVENTION

[0033] In the description that follows, like parts are marked throughoutthe specification and the drawings with the same respective referencenumerals. The drawings are not necessarily to scale and in someinstances proportions may have been exaggerated in order to more clearlydepict certain features of the invention.

OVERVIEW OF THE INVENTION

[0034] Generally speaking a compound has been applied to tissue paper toimpart improved softness characteristics. Amino silicone polymer is amajor contributor to any gain in softness. Excellent qualities wererealized with a Super Mix as defined herein. The composition or lotionis applied to the substrate by spraying or pressing unto the cellulosticfibers.

EXAMPLES OF PROCESSES FOR APPLYING THE LOTION

[0035] The preferred method of lotionizing a web of paper includesflexographic printing press, spraying and rotogravure printing.

[0036] More specifically FIGS. 1(a) and 1(b) generally describes theprocess of applying the composition or lotion to a substrate by aflexographic press. Generally speaking the method of applying alotionizing composition unto a web or substrate of cellulostic papercomprises feeding a plain web of tissue paper 10 between a backing roll12 and plate roll 14 which rotate for example as shown in FIG. 1(a). Thefountain or ink pan 16 contains the lotion 17 described herein which arepicked up by the pick up roll 18 and then transferred to the anilox rollor cylinder 20. The anilox roll 20 is engraved and/or etched 19 as iswell known to persons skilled in the art so as to transfer thecomposition of lotion to the plate roll 14 to coat the web 22.

[0037] Although FIG. 1(a) shows the application of the lotionizingcomposition to one side of the web 10, this invention should not be solimited as both sides of the web may be coated.

[0038] Furthermore FIG. 1(b) shows a variation to the flexographic pressof 1(b) showing a closed cavity fountain system as is well known topersons skilled in the art illustrating doctor blades 24 to scrapeexcess lotion 17.

[0039] The flexographic press illustrated can include heating systems,edge embossing and folder features well known to these persons skilledin the art.

[0040] For example a flexographic press with an “all over” coatingroller may apply lotion. Such roller may have a 360 screen rating and a5.6 micron cell depth where two rubber surface rollers transfer liquidsfrom the inkwell to an anilox roller and from the anilox roller unto themoving web. Such example has been given for illustrative purposes onlyand should not be construed as limiting the invention.

[0041]FIG. 2 illustrates the application of lotion or composition unto amoving web by means of spraying nozzles. It is preferable to spraylotion with an electrostatic charge for delivering accuracy and minimaloverspraying. More specifically FIG. 2 illustrates a parent roll 31which has wound creped paper tissue which is plain or uncoated.

[0042] The numeral 32 represents at least one ply of plain creped tissuepaper which is unwound and moving under tension towards the sprayer. Theidler roll 33 helps to keep tension on the web 32 and can distributetensile force across the web (such as for example the use of a “MountHope” roll).

[0043] The spray nozzle or nozzle 34 mixes together liquids or lotions35 and air 36 before spraying. The spray nozzle 34 can be adjusted tovary the outflow of direct flow of aerated lotion 37 by changing theorifice size and the like in a manner well known to those personsskilled in the art.

[0044] The top-down orientation is not strictly necessary for sprayingpaper webs but helps to minimize losses by aerosol mists of lotion 38and over spray. Supply of lotion 35 is generally kept under constantpressure, by a pump, and may be filtered and/or heated as required. Theflow rate can be adjusted. The supply of air 36 such as a compressed airsupply is generally kept at fairly constant pressure and filtered, driedor dry and at room temperature before spray mixing. Coated web of paper39 leaving spraying zone is drawn to the next operation (e.g. drierunit, ply bonder, folder or rewinder).

[0045]FIG. 3 illustrates schematically a roto gravure press having abacking roll 40 such as a rubber impression roll, a gravure roll 42 suchas an engraved roll contacting the lotion 17, where the underside of theweb 10 is treated with lotion 17. In one example the rotogravure pressmay comprise a “50 Mil Hex” pattern engraved into the cylinder's face toapproximately 50 microns depth with cell capacity approximately 3.9billion cubic microns per square inch of pattern surface area.

[0046] Paper Substrate

[0047] The trial paper substrate utilized in many of the comparativestudies to be described herein was comprised of Scotties Supreme 3 plypaper, however, the invention should not be limited to such tissue papersince the advantages of the invention may be realized by utilizing twoply or one ply paper or other suitable cellulostic fibers.

[0048] For example Scotties Supreme 3 ply paper can comprise of:

[0049] 55% by wt of bleached eucalyptus pulp (E)

[0050] 45% by wt of bleached northern softwood kraft (BNSK)

[0051] such as Domtar Q90 cellulostic fiber substrate. The BNSK caninclude pine, some spruce or perhaps cedar fibers. Depending on the typeof substrate one experiences variations in tactile quantities.

[0052] The term cellulostic generally refers to the tissue beingcellulose but generally can include other chemicals, such as bindingagents to help “glue” or “cement” the various fibers together usedduring typical paper making operations.

[0053] One substrate that can be utilized includes:

[0054] 35% wt E

[0055] 45% wt recycled fibers

[0056] 20% wt BNSK.

[0057] The compositions or lotions disclosed herein improve the tactileor softness qualities of the substrates described. Generally speaking,however, such tactile or softness characteristic are more pronouncedwhen utilizing 55% by wt E as compared to 35% by wt E.

[0058] Compositions Used During Trial Run

[0059]FIG. 4 is a chart which illustrates the various chemicals thatwere utilized in the trial runs for applying to the tissue paper whichwere then subjected to a variety of tests relating to softness, bulk,stretch and tensile strength.

[0060] More specifically the item code Am relates to an amino siliconecomposition which has been applied to a moving web of Scotties Supremetissue. More specifically the item code Am relates to adiamino-functional silicone polymer which is supplied by Dow Corningunder their item DC 2-8040. Typically properties of the Dow Corning DC2-8040 of the diamino-functional silicone polymer relates to a viscosityof 800-5000 centipoise and a non-volatile content of 95%. The inventionhowever should not be limited to the specific supplier item referred toherein but rather is an example of the amino silicone that may be used.

[0061] Likewise the item code Sur referred to in FIG. 4 relates to thecompound Dimethicone Copolyol supplied by Dow Corning under the supplieritem DC-190 which typical properties include a viscosity of 1500 c.p. at25° C. Dow Corning's 190 surfactant acts as a surface tensiondepressant, and wetting agent. The compound Dimethicone Copolyol mayoriginate from other sources. Furthermore as can be seen from FIG. 4 theitem Sur has been blended with the amino silicone namely Am in the ratioof 25% by weight of Sur and 75% by weight of Am. Both compounds havebeen blended as indicated by the column entitled “Direction Action” andthe formula has been designated in the column entitled “Formula by ItemCodes” as Am 75/Sur 25.

[0062] The column Soh relates to silanol functional fluids which arepolydimethyl siloxane polymers with terminal silanol reactivity. Oneexample of the silanol functional fluids originates from Dow Corning andidentified by the supplier item DC Q1-3563 as can be seen from FIG. 4where 25% by weight of Soh has been blended with 75% by weight of Am anddesignated by the formula Am75/Soh25.

[0063] The column Sil refers to a “coupling agent” available from DowCorning under the trade designation DC Z-6040 Silane. This material isreported to be a coupling agent for chemicals and is thought aspotentially useful to improve the lotioned paper as needed. Suchimprovements may include bond formation or adhesion between any of thechemicals or substrates applied unto to the paper web and the paperfibers that are mainly cellulose.

[0064]FIG. 4 also illustrates the Item Code Mo, which relates to ahighly refined white mineral oil originating from Petro Canada anddesignated by the supplier item Purity WO15. By way of example fivecompositions of Mo were tested, namely:

[0065] 90% by weight of Mo and 10% by weight of Sur

[0066] 60% by weight of Mo and 40% by weight Sur

[0067] 25% by weight of Mo and 75% by weight Am

[0068] 75% by weight of Mo and 25% by weight Am

[0069] 100% by weight of Mo.

[0070] The column entitled 802 Witco PA-802 relates to a blend ofnonionic and cationic surfactants. In one embodiment these surfactantsoriginate from Goldschmidt (formerly Witco) under the designationArosurf PA-802.

[0071] Furthermore waxes were also tested as shown in FIG. 4 and areidentified by the Item Code W. One such example of waxes that have beenused originates from the supplier IGI Waxes under the supplier itemMicro 5702.

[0072] Moreover propyl-glycol was also tested and shown in FIG. 4 asItem Code Pg originated from Ashland.

[0073] Finally polypropoxylated-stearyl alcohol was also tested anddesignated by the Item Code PPG supplied by Goldschmidt under theirsupplier number PPG-11 Stearyl Ether.

[0074] The Item Code PPG was utilized in two test runs namely a SuperMix which is hereby being used as a short form for the followingapproximate composition by weight percent, namely:  18.8% amino silicone 18.8% dimethicone copolyol  18.8% silanol functional fluid  18.8% whitemineral oil remainder polypropoxylated stearyl alcohol. = 100.0%

[0075] Moreover PPG was also used in the formula by Item CodeAm60/PPG40. Note Am60/PPG40 is identical to AM60/PG40, as used herein.

[0076]FIG. 5 summarizes the trial runs of the lotionizing formula byItem Codes as shown including the viscosity and surface tension of sameas particularized therein.

[0077] Objectives of the Lotionizing Trials

[0078] An 18 inch wide web of Scotties Supreme was lotionized byutilizing the composition formulas referred to above. More specificallysuch formulations were applied to the web of celluostic fiber by:

[0079] flexographic press with a folder

[0080] flexographic press with dryer and folder

[0081] spray nozzle with dryer and folder.

[0082] Once the lotion was applied to the web, samples were preparedinto sheets of folded facial tissue. Generally speaking such sampleswere prepared at two to three doses for each lotion. Thereafter thesamples were tested to discover the effects of the lotion on the paperby formulation and dosage so as optimize:

[0083] (a) the relationship between hand feel (softness) and dose;

[0084] (b) dose on absorbency, bulk and tensile strength.

[0085]FIG. 6 is a chart of the softness verses dose of silicon lotionflexoprinted unto Scotties Supreme substrate.

[0086] In particular the web of tissue was lotionized in a flexo press:

[0087] (a) at speeds of 300-600 feet per minute;

[0088] (b) where up to 13% of lotion was added on by weight of the sheetof tissue at high viscosity;

[0089] (c) a viscosity range of 10 to 4,500 centipoise was tested;

[0090] (d) with surface tensions of 21 to 70 dynes/centimetre;

[0091] (e) two separate doses were practical for each lotion.

[0092] Furthermore a dryer was utilized to help distribute lotions andovercome coarse flexomat. A high temperature is generally better thanambient temperature and a dryer temperature was tried between 100 to 165Celsius.

[0093] Furthermore interfolded tissues were prepared at web speeds of upto 600 feet per minute.

[0094] Specific Parameters for Gravure Press to Lotionized Facial Tissue

[0095] A 70 inch web of regular three ply Scotties Supreme ex HMD PM 5was utilized in the gravure press described above at various speeds from300 to 2000 feet per minute. Such web was lotionized with theingredients referred to above and in particular the formula Am60/PPG40.

[0096] The lotion was transferred by a gravure cylinder unto the bottomply of the web. The lotion add on was approximately 3% to 4% of sheetweight and somewhat decreased with speed. Printing speeds tested wereapproximately 300, 500, 1000 and 1500 feet per minutes. Print impressionroll load can be varied from nil to 225 pounds per inch of width alongthe entire nip where paper web passes between the impression roll andgravure cylinder.

[0097] Such lotionized paper was then wound unto paper rolls withAm60/PPG40 at speeds to 1500 feet per minute.

[0098]FIG. 6 illustrates that there were a number of formulations, whichexhibited a hand feel greater than 105 WWS, which was tested inaccordance with a method to be disclosed herein. A hand feel of 105 WWSwas chosen as a minimum desired goal as this represented the maximumcurrent hand feel which is attainable by prior art means.

[0099]FIG. 6 is a more detailed histograph of the softness of ScottiesSupreme with various lotions as identified above plus those componentsreferred to below and doses as it relates to hand feel. In particularFIG. 7 shows that the formula Am60/PPG40 demonstrated hand feel valuesof 112 and 110 WWS while the Super Mix had values of 113 and 107respectively. It should be appreciated that such softness values relateto a 3 ply tissue paper, and that different values would be observed if2 ply or 1 ply tissue were to be utilized. Generally speaking the handfeel of a 2 ply tissue paper coated with Am60/PPG40 would exhibit avalue of approximately 95 WWS while a one ply would be lower.

[0100] More specifically FIG. 7a is a chart showing the testing of 23lotioned variants of 3 ply Scotties Supreme (trade mark) againstreference of plain Scotties Supreme identified by column 100. FIG. 7brepresents the data in FIG. 7a in a histograph form.

[0101] For example when 101 in FIG. 7a represents the variant 101 inFIG. 7b identified as Z Quat 0.8 gsm. Z Quat is a trade name for amodified aliphatic amine available from Goldschmidt Chemical Corp. underproduct identification EXP-5398-4. More specifically 0.8 gsm (i.e. 0.8grams per meter of tissue) are applied and subjected to the testsreferred to in FIGS. 7a and 7 b. Likewise variant 103 relates to 0.7 gsmof Z Quat applied to the Scotties Supreme tissue, and tested as referredto herein.

[0102] Variant 104 relates to the silanol functional fluids referred toearlier. Variant 105 relates to applied 25% by weight of Z Quat and 75%by weight of Ethanol 96% (i.e. EtOH), with a calculated dose of lotionon the web of 4 Kg/MT.

[0103] Variant 107 relates to 5% of P-637 which is a proprietarycommercial mixture available from ChemPro Inc., mixed with 95% water andapplied to the Scotties Supreme web at 7 Kg/MT.

[0104] Variant 108 relates to the formulation AM60/PPG40 referred toearlier applied to the web at a measured dose of 91 average Kg/MT andcalculated dose of 40 Kg/MT.

[0105] Variant 110 relates to 10% of P1510 which is Arosurf PA-802(described herein), mixed with 90% water by weight.

[0106] Variant 111 and 114 relate again to the reference ScottiesSupreme.

[0107] Variant 119 and 120 relate to a substrate under the trade nameSolusoft WA which is a proprietary commercial mixture of principallysilicone polymers at 30 to 35% by weight of an aqueous mixture assupplied by Clariant AG where variant 119 is applied in a flexo gravurefashion while variant 120 is sprayed unto the web. Finally variant 122relates to applying a substrate under the trade name Tego FS41 which isavailable from Goldschmidt Chemical which is a proprietary commercialblend of organo-polysiloxane of approximately 32% non-volatilematerials. FIG. 8 is a histograph of the bulk of Scotties Supreme withthe calculated dose of various lotions applied as tested in the mannerto be described herein.

[0108] Moreover FIG. 9 is a histograph of the stretch of ScottiesSupreme with various lotions and doses where MD relates to stretch inthe machine direction while CD relates to stretch in the cross machinedirection.

[0109] Moreover FIG. 10 relates to the tensile strength of ScottiesSupreme with various lotions as illustrated. There are a number ofmethods that can be used to estimate the doses of lotion added to thesubstrate. Such methods include:

[0110] (a) for flexopress—the weight of the whole web sample is takenbefore the dryer;

[0111] (b) spray—the ratio of the weight of lotion delivered by nozzlethat lands on the web in 60 seconds to the weight of the web areapassing beneath in the same period of time;

[0112] (c) the weight of folded sheets taken after the dryer;

[0113] (d) weight of materials extracted by solvents from folded sheetstaken after the dryer;

[0114] (e) weight of silicone polymer determined in sheets by X-rayanalysis.

[0115] In each method, a gain in weight was calculated by determiningthe difference in weight between lotionized paper and the plainuntreated paper substrate used at a time closest to the time of actualtreatment.

[0116] In some cases, as for example, in methods 1 and 2 referred toabove, hen the weight of treated paper was less than the closest blankresulted in a negative difference, (i.e. loss rather than gain) thetarget rate for the bare sheet would be used.

[0117] The estimates of dose or “add-on” are then calculated andexpressed in percentage terms as the algebraic ratio of the gain inweight from the lotion added to the original weight of the plain paperas used.

[0118] Results

[0119] An analysis of the materials referred to above shows that aminosilicone polymer is a major contributor to any gain in softness. Areview of the figures show that the highest doses of lotion withincreased compositions of amino silicone gave generally the best handfeel values. However lotions with high content of amino silicone wereviscous and difficult to manage requiring high levels of dilutant (e.g.hydroxy-silicone) to decrease the viscosity of the mixture andsurfactant (e.g. polyoxygenated oils) to allow water penetration to thetreated paper.

[0120] It was found that amino silicone coating on paper is hydrophobicunless blended properly with suitable hydrophilic materials. Regardless,amino-silicones adhere well to paper fibers.

[0121] Moreover anhydrous lotions containing amino silicone were bestfor increased tissue paper softness. Water based lotions required thedryer to quickly remove excess moisture from the web before the paperdisintegrates. Thus increased water content in a lotion limits theeffective dose.

[0122] However non-aqueous liquids did not require a heating zone toremove water but benefited from heat energy to improve distribution oflotion ingredients through the matrix of cellulose fibers in the paperweb. Furthermore, exposure to radiant heating better maintained theoriginal post-treatment absorbency for lotionized AM60/PG40 and SuperMix samples over the 7 months of aging since preparation.

[0123] Many lotions in the past tended to decrease the tensile strengthof the paper substrate. Generally speaking lotionized papers with a highimprovement in softness also have low tensile strength and/or largelosses in original tensile strength.

[0124] However it was unexpectedly observed that the Super Mix andcompositions having amino silicones had high perception of softness andrelatively good balance of tensile strength. Also unanticipated was thereduction in tissue dust or “lint” for Super Mix and AM60/PG40lotionized paper tissued.

[0125] Moreover as can be seen from the figures paper bulk wasdepreciated minimally by lotionizing, but there was some indication thatsome of the lotions added to the loft.

[0126] Furthermore it was observed that migration of the lotion toadjacent plies occurred in the roll between printing and conversion.Initially the improved softness was felt on the treated surface of the 3ply web. After lotionized rolls aged two weeks, it was more difficult toknow which ply has been originally treated. Lotion ingredients migratedbetween the treated ply and adjacent plies while the rolls were storedor were in transit. This improved the sheets overall tactile.

[0127] Therefore the results of the tests referred to above showed:

[0128] (a) amino silicone was a contributor to softness;

[0129] (b) blends were needed for spray nozzles and printing presses;

[0130] (c) the dilution chemicals used to reduce the viscosity of theamino silicone also depreciated the expected gain in tensile strengthfrom the amino-silicone;

[0131] (d) the hydroxy silicone did not really add to the paper softnessbut served well as a satisfactory extender or dilutant of the aminosilicone.

[0132] (e) several lotioned paper samples were made which met facialtissue standard of 105 WWS;

[0133] (f) non-water based lotions were found to be best for increasingtactile softness.

[0134] Perception of Softness

[0135] (note by “appeared” we mean perceived by touch not sight)

[0136] The figures shown herein illustrate good softness for:

[0137] Am60/PPG40

[0138] Super Mix

[0139] the Super Mix appeared relatively “wetter” while the Am60/PPG40appeared relatively “drier” than the other by hand feel.

[0140] Hand Feel Panel Test

[0141] The hand feel test is based on a “paired-comparison” techniquewhile the panelist assess samples “blind” without seeing them. Eachsample is compared to every other sample, including reference standards,by every panelist. The preferred sample is rated on a scale from 1 to 9.Results are immediately recorded by the panel facilitator beforeproceeding to the next comparison. Ratings range from 1 to 9 where oneis equal and nine is totally different. Three known standard samplesmust be used along with typically four unknown samples. Standards areintended to span the range of interest. Typically, ten panelists areincluded. Therefore, a typical handfeel panel generates 210 separatepreference comparisons. The data points are then analyzed by a “leastsquares” linear regression algorithm. Statistical values of average andstandard deviation are calculated for all handfeel standards andinterpolated for each unknown sample for each panelist and the overallresult. Similarly, panel quality control statistics are calculated fordetermining the accuracy (i.e. correlation coefficient r) andinconsistency (inconsistency coefficient i) for each panelist and theentire group. Results from one or more panelists and the group can bedisqualified based on poor quality control data as compared againsthistorical values. In the case of disqualifying some panelist(s), thosevalues are excluded and the remaining panelists' data is reanalyzed.Handfeel panel data are considered satisfactory when derived from eightor more qualified participants.

[0142] By utilizing the hand feel test described one can generate worldwide scott values (WWS) and determine the perceived softness when testedagainst a baseline sample.

[0143] Alternatively softness may be determined when more than 50% ofpeople recognize an improved hand feel when comparing the coated paperwith uncoated paper substrate.

[0144] Hand Feel Test for Quality Control

[0145] The following steps were undertaken to determine hand softness,namely:

[0146] (a) fold a specific number of sheets into a sample pad by foldingin half once, then fold in half again. The sample is four sheets thick.

[0147] (b) ensure crepe side is in—smooth side (drier side) on theoutside of the pad;

[0148] (c) roll products—ensure when folding that the outside of theroll is on the outside of the pad;

[0149] (d) select a standard which is closest to the target for theproduct one is testing;

[0150] (e) take a standard pad in one hand and test pad in the other.Compare the two for cushion, flexibility and surface feel.

[0151] (f) cushion—does the test sample feel thick or flat compared tothe standard sample

[0152] (g) flexibilility—does the test sample feel flexible, crushableor is it stiff compared to the standard

[0153] (h) surface feel—does the test sample feel smooth or harshcompared to the standard sample

[0154] (i) if the test sample is softer, select the next higheststandard available. If the test sample is less soft select the nextlowest standard.

[0155] (j) compare the test sample verses the new selected standard

[0156] (k) continue this way until one has “bracketed” the test sampleinto two standards

[0157] (l) if the test sample is equal to a standard, record thestandard feel as the hand feel rating of the test sample

[0158] (m) if the test sample is between the two standards, record theaverage of the two standard value

[0159] (n) ratings are recorded in increments of five. Enter the ratinginto the system.

[0160] Alternatively improved softness may be determined where more than50% of people recognize an improved handfeel when comparing the coatedpaper with uncoated paper substrate.

[0161] Determining Tensiles and Stretch

[0162] The following test was conducted to determine tensiles andstretch

[0163] 1. cut an 8 inch section from the sample submitted by the machineroom;

[0164] 2. strips are cut in both machine direction MD and crossdirection CD;

[0165] 3. place the sample in a strip cutter so that the strip is cutparallel with the direction being cut;

[0166] 4. clamp MD or CD set of strips in upper jaw of tensile tester,ensuring strips are straight;

[0167] 5. place the specified number of plies in the lower jaw, clamp inplace. Strips should be drawn tight enough to eliminate slack withoutpulling out any crepes.

[0168] 6. Activate the test button. Stretch reading is displayed aselongation EL. Tensile strength is labelled L.

[0169] 7. Test five samples and average. Enter the average stretch andtensile into the system.

[0170] Determine Wet Tensile

[0171] The following procedure was conducted to determine the wettensile, namely:

[0172] 1. cut tensile strips

[0173] 2. place strips in hot plate at 300° F. for two minutes

[0174] 3. fold the strips in half and dip into a beaker of distilledwater at room temperature. One end of sample length should be saturatedat the center. Ensure the sample is wet through all plies.

[0175] 4. Clamp sample in upper jaw of tensile tester.

[0176] 5. Place specified number of plies in lower jaw, clamp in place.Strips should be drawn tight enough to eliminate slack without pullingout any crepe.

[0177] 6. Activate the test button. Tensile is labelled L.

[0178] 7. Test five samples and average. Enter the average wet tensileinto the system.

[0179] Determining Basis Weight

[0180] The following procedure was utilized to determine basis weight,namely:

[0181] 1. a 13 inch section is cut from the sample submitted by themachine room.

[0182] 2. The section is cut using the electronic cutter and theappropriate die.

[0183] 3. A sample of the reel 8 plies thick is cut out using the 8sheet die.

[0184] 4. A sample of the rewinder 12 plies thick is cut out using the12 sheet die.

[0185] 5. The reel checks of the paper machine, the sample is weighedafter cutting and the weight recorded into the system.

[0186] 6. Samples from the rewinders are conditioned before weighingnamely:

[0187] five minutes for grades with the basis weight under 15 pounds

[0188] 8 minutes for grades with the basis weight of 15 pounds orhigher.

[0189] 7. After conditioning the sample is weighed and the resultsentered into the system.

[0190] Determining Bulk

[0191] The following procedure is utilized to determine bulk:

[0192] 1. bulk is tested using the same sample what was used fordetermining basis weight.

[0193] 2. Measure bulk by placing sample between plates of bulker.

[0194] 3. Slowly release the plunger, applying the pressure gradually.

[0195] 4. When the plunger is fully compressed, take readings to thenearest one thousandths of an inch. Take three readings and average.

[0196] 5. Reel checks from the paper machines are measured for bulkafter cutting them out.

[0197] 6. A sample of the reel paper machine and samples of rewindersare conditioned before measuring bulk as referred to above. Enter theaverage bulk into the system.

[0198] Hydrophilic Softener

[0199] Good results have also been experienced by utilizing ahydrophilic softener such as DC8600 available from Dow Corning.Furthermore the DC8600 to be described herein can be used for toilettissue, towels, serviettes and the like.

[0200] DC 8600 hydrophilic softener is classified as hydrophilic aminocopolyol as particularized in U.S. Pat. No. 6,136,215. The “backbone”polydimethylsiloxane (i.e. PDMS) is well known to be hydrophobic, but isnot a greasy feeling. PDMS improves the flexibility or drape characterwhen applied to non-woven webs with a significant content of paperfibers, thereby PDMS improves the overall tactile sensation. PDMS alone,however, causes deterioration of the fibrous web by loss of tensilestrength.

[0201] Accordingly PDMS was modified by various functional groups or“side chains” along its length. Numerous polyoxygenated chains (e.g.polyethylene-polypropylene glycol allyl methyl ether) found in DC 8600impart hydrophilicity to the molecule permitting it to be miscible withwater, but this does not depreciate the handfeel. Side groups ofhydrocarbon fatty alcohol radicals found in DC 8600 with varying carbonchain lengths improve the handfeel by offering a more luxurious tactilesensation, which is not greasy feeling, as these too are bound to thePDMS. Numerous amino and amide functional groups attached whetherdirectly or indirectly to PDMS offer enhanced bonding sites with therelatively more electronegative functional groups found on adjacentsurfaces (e.g. hydroxyl functional groups of the cellulose paper fibers)and/or with water molecules present in the air at typical ambientconditions of temperature and relative humidity. So called “hydrogenbonding” from water molecules can form “bridges” to occur virtuallyeverywhere along the modified PDMS molecule between adjacent attractivegroups and contribute to the spatial stability of the polymers and closefibers by intramolecular and intermolecular means. Furthermore, theamino functional groups are well known to enhance the tensile strengthof the predominantly cellulose fiber matrix when so treated and,consequently, this improves the so called “wet-strength” of the webafter being wetted by water or another liquid which may contain somewater (e.g. ethanol).

[0202] DC 8600 lacks a significant content of water. Additional drying,therefore, is not an absolute requirement for topical application onto adry web containing fibers of paper, etc. Experience has shown, however,that further exposure to a source of heat after such topical applicationremoves traces of water and tends to improve dispersion of the addedconstituents throughout the matrix of the fibrous web and increaseand/or speed up bonding adherence and/or association between any of thepolymers and/or other constituents and the individual fibers of the weband/or cross-links or associations between several fibers of the weband/or cross-links or associations with any content of the 8600 toitself within the fiber matrix of the web and/or at the exterior of theweb (e.g. a surface coating).

[0203] The DC 8600 hydrophilic softener can be applied topically ontothe external surfaces of a moving web of non-woven fibrous material insingle or multiple plies by a printing press or spray nozzle asdescribed above. However, the DC 8600 can also be added into a waterbased batch of pulps and other paper making chemicals. Preferably the8600 is added directly to the batch of pulp fibers in water before anyother chemicals are added. Furthermore, agitation or mechanical mixing(e.g. in a pulper and/or refiner) with or without extra heating, willenhance the natural dispersion of the hydrophilic polymer throughout thebatch and close association with, including surrounding and/or adherenceto, the wet paper fibers while at the “wet-end” of a paper-machine.

[0204] The treated pulp mixture will then be processed as is typical inpaper making. For example, the treated pulp mixture is released via aheadbox “slot” or “jet” onto a moving wire belt (e.g. “Fourdrinier” orin addition to a Fourdrinier wire, initial de-watering can be done by a“twin wire former” where the sheet is initially de-watered as a functionof fabric, tensions and roll radius) for water removal by gravitydrainage then suction drainage by vacuum boxes and mechanical expressionby pressing felts and by a pressure nip formed between adjacent rollersand/or vacuum suction rollers. Residual water in the semi-dry fibrousweb is typically evaporated while it contacts or passes over a heatedsurface or heated air passing through the web, or heating means. By wayof example such heat surface may be a drum dryer (i.e. Yankee), throughair dryer, or the like. Additional chemicals, with varying quantitiesfor surface coverage, are typically sprayed onto the drum dryer surfaceand/or the web. This is, firstly, to help adhere to bind the semi-dryweb onto the contact surface of the drum dryer and, secondly, to helprelease the dried web during creping. One or more scraping blades aretypically used to remove or “peel-off” the dry web from the dryersurface and to mechanically soften or “crepe” the paper on the rotatingdrum by collision of the paper with the stationary blade edge. Finallythe dry web is wound into large rolls or “reels” at a moisture contentof 15% or less by weight of the dry web, ideally at 10% or lessmoisture, and most preferably at about 4% moisture or less.

[0205] Calendaring of the dry web may or may not be completed after thetreated web is dry. Calendaring is done to increase the surfacesmoothness or gloss of the paper. Calendaring can also be done on thejust dried tissue paper web immediately after exiting the creping bladeadjacent the “Yankee” drying section but before the reeling section ofthe paper machine, where the flat web is wound to form of reel.Typically, calendaring is done soon after reels have been made andduring simultaneous unwinding of one or more reels. The paper web passesbetween the pinch-point or “nip” of a vertical stack of horizontalcalendar rolls or cylinders and is rubbed on the exposed surfaces bycontact with the rotation of the adjacent rolls' hardened polished metal(e.g. iron) surfaces). The various webs of one ply will be immediatelylayered, with or without physical adhesion or chemical adhesives, toform a continuous sheet with multiple plies that is then wound into anew reel or “Parent Roll”.

[0206] Such a treated web of dry non-woven fibers may or may not becompletely used for forming a multiple ply sheet. It is possible to useonly reels of treated single ply web for the exterior plies of amultiply sheet and untreated reel(s) for any inner ply(s) or any othercombination for reasons of economy, handfeel or softness for tactileappreciation, tensile strength whether expressed as dry or wet tensilestrength, cushion or bulkiness, and/or another desired paper attribute.

[0207] Typically good results were experienced by applying from 0.05% to25% by weight of DC 8600 to a non-woven web of predominantly air-drypaper fibers by weight. Preferably, the topical applied dose ranges from0.1% to 15% by weight. Whereas, the dose when applied by pulping ispreferably 0.1% to 3.0% by weight of the dry air fibers. The paperfibers to be used are, preferably, predominantly of cellulose but couldinclude a fraction of up to 50% by weight as lignin-cellulose and/orrayon and/or synthetic filaments.

EXAMPLE OF PROCESS DESCRIPTION (FOR COATING FIBERS WITH DC8600 IN I.E.“WET END” OF A PAPER MACHINE)

[0208] The following is an example of a process description to prepare aweb of light dry creped (LDC) tissue paper whose fibers are coated withDC8600 in the “wet end” of a paper machine.

[0209] The furnish is composed of bleached softwood kraft pulp, such asCanfor HS400 pulp in a proportion of 44% and bleached acacia pulp in aproportion of 56%. The pulp is received as dry lap and reslushed at aconsistency of about 5% (solids) in a so-called pulper with “white water” recirculated from the paper machine. Once uniformly repulped, the pulpis pumped to a “dump chest” and then to a “machine chest”. Then, fromthe machine chest the pulp is pumped through a “refiner”.

[0210] A refiner is generally equipment made of two grooved discs—onerotating and one immobile where pulp is fed between such discs throughthe immobile disc. The purpose of the refiner is to develop strength byincreasing the specific surface of fibers through the delamination andfibrillation. The refiner was operated at approximately 200 Mega Waftsper Tonne of pulp finish.

[0211] After the refiner, the pulp continues to a “regulator”, whichgenerally consists of a constant level regulation box. The pulp is fedto the middle chamber of the regulator and baffles are used to level theaccess of the pulp to the accept side and the reject side. The rejectside goes to a stock return tank which is then pumped to the machinechest. The accept side is fed to the bottom of the “wire pit” into achamber leading to the inlet of a “fan pump”. In this manner, “whitewater” from the wire pit is mixed with the pulp at the inlet of the fanpump. he blend is then fed to a pressure screen to remove anycontaminants. The accept side of the pressure screen goes to the“headbox”. The reject side goes to a vibrating screen such as forexample a Finckh screen, where the rejects are sewered and the acceptgoes back to the wire pit.

[0212] The headbox distributes the pulp suspension evenly across thepaper machine width. The headbox throws the pulp suspension on a wirethat lets part of the water (eventually called “white water”) go throughto the wire pit and that retains fibers on its surface, forming the web.The wire is endless, and rotates around cylinders. The drainage area isan inclined “Fourdrinier” type. At the end of that area, the sheet istransferred to a felt with the help of a “pick up shoe”. A pick up shoeis a device that uses vacuum on the other side of the felt to transferthe sheet from the wire surface unto the felt surface.

[0213] Then another felt bottom belt joins the top felt with the sheetin the middle. This goes through a first pressing stage, where pressureis applied by means of two rolls pressing against each other. The waterin the sheet is expressed to the felts and the sheet reduces its watercontent. After that pressing stage, the sheet remains on the top feltand continues to the second pressing stage, where the sheet is nowpressed between a pressure roll (applying the pressure) and a Yankeedryer. The Yankee dryer is approximately a 12 foot diameter rotatingcylinder, containing steam, used to dry the paper. Prior to theapplication of the sheet onto the Yankee dryer, some coating is sprayedon the Yankee dryer surface. This coating is composed of Hercules'Crepetrol 8115 (120 cc/min) and Release Agent 8312 (12 cc/min) and issprayed on the surface of the Yankee with a water carrier. The Yankeehas a tangential speed of 3100 feet per minute. The spray of ReleaseAgent 8312 was reduced after the add-on of 5 kg of DC8600 per Tonne ofair dry pulp fibers, commensurate with increasing content of thesofteners in the web, and eventually “shut-off” between 5 and 10 kg ofDC8600 per Tonne (i.e. 1000 kg).

[0214] The rotational speed of the reel was increased with increasingsoftener content on the fibrous web above approximately 5 kg of DC8600per Tonne.

[0215] At 10 kg DC8600 per Tonne with creping adhesive Crepetrol 8115 asused, however, the web did not adhere very well to the Yankee surfacecausing ineffective creping. Symptoms included “loose sheet” as seen onthe Yankee, poorly wound reels, a coarse crepe pattern on samples of theLDC paper and lab handfeel measurements had deteriorated.

[0216] After that second pressing stage, the sheet remains on thesurface of the Yankee and undergoes the final drying step. The Yankeedryer is covered by a gas-fire hood, which contributes to dry the paperfaster. Once dried and containing 3-4% moisture, the sheet is peeled offthe Yankee surface by means of a “creping blade”. This blade is as longas the Yankee dryer is wide and is applied against the surface of theYankee.

[0217] The sheet then goes through a calandering stage, where the sheetpasses between two steel rolls and pressure is applied. The speed of thesheet at that point is approximately 2630 feet per minute. The surfaceof the sheet is made flatter and softer by this process step. Then thesheet is wound into reels and finally, two reels are rewound andcalandered together at a time to produce a two ply roll that furtherundergoes converting into finished product.

[0218] By utilizing the process described above and the substrate orfinishings described above, one embodiment of the invention illustratedthat the optimum addition of DC8600 was found to be approximately 0.5%(i.e. 5 kg DC8600 per 1000 kg or 1 Tonne) by weight of air dry pulpfibers, where generally the best gain in handfeel (i.e. 7 to 8 wwsunits) was experienced in a sustainable process. The gain in handfeelrelates to a perceived improvement by approximately 70% to 80% of ahuman group.

[0219] Furthermore it was observed that regardless of the added DC8600it was preferable to include the calendering step to improve the surfacefeel aspect of softness of the LDC papers utilized. Otherwise withoutcalendering the paper, any handfeel result was insignificantly differentbetween the variants tested.

[0220] The range of basis weights for the treated paper, when machinedry after calendering can extend from 8 to 20 pounds per ream (reamdefined as 3000 square feet of paper). Preferably the basis weight rangefor the pre-treated paper when machine dry after calendering is from 8to 12 pounds per ream.

[0221] Moreover unlike most other paper softeners, where handfeel isimproved but with a loss in tensile strength of the treated paper, itwas observed that the treatment described herein substantiallymaintained the tensile strength in the machine dry paper web foradditions to 10 kg DC8600 per Tonne air dried pulp fiber. There was alsosome evidence to show modest improvement in the tensile strength in thedry paper web including its wet tensile strength.

[0222] Generally speaking in the pulping process the pH is in the rangeof 5 to 9; more preferably 6 to 8, and still more preferably neutral.Typical temperatures of the water were used as known by people skilledin the art at around 33 to 80 degrees Fahrenheit. Furthermore typicalYankee temperatures were used. Application of Microcapsules to TissuePaper

[0223] 1. Background

[0224] The following relates to the application of microcapsules totissue paper in order to impart softness and/or scent to the sheet. Whenshear or excessive pressure is applied to the microcapsules (as mayoccur during wiping or blowing one's nose, etc.) the capsules aredesigned to break, releasing the softening oil and/or other liquids,into the sheet and unto the skin of fingers, etc.

[0225] 2. Method

[0226] The microcapsules were applied by spraying suspensions of varyingconcentration onto a continuous moving roll of tissue paper. Dosagelevels were controlled by varying the speed and spray flow rate. Theapparatus used is shown in FIG. 12.

[0227] For example a 12″-wide roll of tissue was fed into an open nipformed by a top and bottom roll and moving belt. No nip pressure wasapplied and the top roll remained stationary. The tissue sheet wasreeled onto the winder at the opposite end of the adhesion tester, afterpassing under a mist of microcapsule suspension sprayed by an atomizingnozzle.

[0228] Each targeted dosage consisted of one “run”. The beginning andend of each run were indicated by tabs placed in the roll of tissue asit was being reeled. There were approximately 4-5 runs per winder roll,after which the roll was set aside and a new one started. The followingday, samples from each individual run were manually re-wound oncardboard cores with the treated side of the tissue located on theinside of the rolls, as indicated by colored tape.

[0229] A detailed diagram of the spray system is shown in FIG. 12. Thespray nozzle was a stainless steel atomizing nozzle with a #2050 fluidcap and a #62240-60° air cap supplied by Spray Engineering(Mississauga). Air was supplied to the nozzle at 10 standard litres perminute (L/min.) as measured by a rotameter. The liquid was fed bygravity using a graduated cylinder located several feet above thenozzle. The liquid flow rate into the nozzle was controlled by a WhitneySS-31RF4 needle valve. The air and liquid connections to the nozzle weremade with ¼″ Swagelock.

[0230] Part of the flow to the nozzle valve was diverted andre-circulated back to the graduated cylinder with a Peristaltic pulp,using ⅜″ OD, (¼″ ID) Tygon tubing. This recirculation was necessary tokeep the microcapsule suspension dispersed before entering the nozzle. Apressure valve (located just prior to the graduated cylinder) providedsufficient back pressure to maintain uniform flow rates.

[0231] Nozzle flow rates varied from 10-30 millilitres per minute(ML/min.), to target recommended microcapsule dosages of 0.019-0.37 g/m²(dry basis). These dosages were obtained by trial and error, by turningthe combination of back pressure, feed valve and return valves The flowrates were measured by stopwatch from the graduated cylinders.

[0232] Chemical Additives

[0233] Three solutions were used to prepare the recipes in this studynamely:

[0234] Deionized Water (DIW)

[0235] 3M Microcapsules (35 micron size, hard shell filled with mineraloil) @34.3% solids in solution.

[0236] Carboxymethylcellulose (CMC) (Kruger P-1202 by Amtex) @2% solidsin solution)

[0237] To prevent spoilage, each of these solutions contained smallamounts of sodium benzoate at ≈0.1% w/w.

[0238] Three recipes were used, and are listed below in Table I. TABLE IRECIPES SPRAYED ONTO TISSUE ACTIVE TOTAL MICRO- SOLIDS CAPS . RECIPECOMMENT (%) SOLIDS RECIPE 1 part of 34% Microcaps 4.9% 3.1% #1 microcapsplus adhesive suspension sol'n. RECIPE 100% DIW (Water Water only n/an/a #2 only, control) (control) RECIPE 1 part microcaps Microcaps 3.1%3.1% #3 suspension @ 34% Only 10 parts DIW

[0239] Estimating the Dosages

[0240] The applied dosages were estimated by assuming the tissue sheetpicked up 100% of the liquid coming out of the nozzle:${{Wet}\quad {Pickup}\quad \left( {g\text{/}m^{2}} \right)} = \frac{({FlowRate})(p)}{({Speed})({Width})}$

[0241] Dry Pickup (g/m²)=Wet Pickup (Xsolids)

[0242] where:

[0243] FlowRate=nozzle flow rate (mL/min.)

[0244] ρ=liquid density, assumed to be that of water (1 g/ml).

[0245] Width 12 in (0.3048 cm)

[0246] Xsolids—active solids content

[0247] Note that the mass as sodium benzoate in the recipes was assumednegligible for the purpose of the calculations.

[0248] 4. Results

[0249] 18 samples were prepared and manually re-wound on cardboard coresJuly 21. The results are summarized in Table II. Estimat- EstimatedEstimated Targeted Actual Nozzel Microcaps CMC ed Total CMC MicrocapsEstimated Sample Speed Speed Flow Rate Active Active Total Pickup PickupPickup Water Pickup Label (m/min.) (m.min.) (ML/mln) Solids SolidsSolids (g/m²) (g/m²) (g/m²) (g/m²) Comments RECEIPE #1. Microcaps/CMCMixture 20 19.9 10.4 3.1% 1.8% 4.9% 1.72 0.03 0.05 1.64 30 29.2 10.73.1% 1.8% 4.9% 1.20 0.02 0.04 1.14 50 45.9 10.3 3.1% 1.8% 4.9% 0.74 0.010.02 0.70 80 79.8 10.0 3.1% 1.8% 4.9% 0.41 0.01 0.01 0.39 10  9.6  9.83.1% 1.8% 4.9% 3.33 0.06 0.10 3.17 RECEIPE #2 Control (Water Only) 1010.0 8.9 0.0% 0.0% 0.0% 2.91 0.00 0.00 2.91 Pulsing spray when water isused.  2 19.9 9.7 0.0% 0.0% 0.0% 1.59 0.00 0.00 1.59 Pulsing spray whenwater is used 30 29.0 9.4 0.0% 0.0% 0.0% 1.06 0.00 0.00 1.06 Pulsingspray when water is used. 50 49.7 9.4 0.0% 0.0% 0.0% 0.62 0.00 0.00 0.62Pulsing spray when water is used.  8 80.4 9.0 0.0% 0.0% 0.0% 0.37 0.000.00 0.37 Pulsing spray when water is used. n/a n/a n/a n/a Control.Sheet passing thru, no spray. RECEIPE #3 Water/Microcaps Mixture  50 50.3 29.3 3.1% 0.0% 3.1% 1.91 0.00 0.06 1.85  75  74.2 30.8 3.1% 0.0%3.1% 1.36 0.00 0.04 1.32 100 100.6 34.3 3.1% 0.0% 3.1% 1.12 0.00 0.031.08 125 122.2 27.3 3.1% 0.0% 3.1% 0.73 0.00 0.02 0.71  50  51.5 29.33.1% 0.0% 3.1% 1.86 0.00 0.06 1.81  10  10.2 29.3 3.1% 0.0% 3.1% 9.440.00 0.29 9.14 Over-dosing the sheet on purpose.  20  19.8 28.6 3.1%0.0% 3.1% 4.72 0.00 0.16 4.58 Over-dosing the sheet on purpose.

[0250] The results summarized in Table II point to the use of water tomodify the paper by adding microcapsules containing valuable oilyliquids such as fragrance or the like. These applications are useful,but depending on the water added such water will tend to deteriorate theproperty of the web and therefore must be carefully controlled.

[0251] Another embodiment of the invention resides in substituting thewater with room temperature non-volatile non-aqueous liquids such asmineral oil based lotions or polyethylene glycol based lotions asillustrated in FIGS. 15 and 16.

[0252] As can be seen from FIGS. 15 and 16 by utilizing ratios ofapproximately 4 to 10 parts carrier to one part fragrance, the fragrancewill tend to stay longer with the carrier and in a sense the fragranceis bound to the cellulostic fibers by the lotion sprayed thereon.

[0253] In particular one can see from FIG. 15 the carrier liquids usedtherein comprise food grade mineral oil designated for example forFGWO35 sold as “Purity” brand by Petro-Canada. The reference 35generally relates to the viscosity as 35 centistokes.

[0254] The fragrance type and the add on by wt/wt percent is also shownin FIG. 15. The reference to lipocaps relates to the trade name formicrocapsules from Lipo Technologies, whereas other fragranced andcoloured microcapsules were prepared by 3M. As can be seen from FIG. 15by utilizing the carriers described therein the invention is notrestricted to microcapsules but can include fragrances or aromas as wellas microcapsules of same.

[0255]FIG. 16 also refers to a Paraflex HT-68 which is another exampleof a mineral oil from Petro Canada.

[0256] Moreover FIG. 16 includes other examples of carrier liquidcompositions and surfactants as well as fragrant types. For example MEGrelates to a mixture of menthol, eucalyptus and camphor aromas asblended by Compagnie Parento Limited.

[0257] Moreover FIG. 16 illustrates the application of the carrier andfragrance by means of flexographic press and includes specifications ofan example of anilox roll, plate roll and nip gap. However, suchspecifications are for illustrative purposes only and should not belimited thereto. Furthermore the carrier fragrance may also be appliedby spraying or rotogravure press.

[0258]FIG. 17 illustrates the use of a surfactant such as DC 8600 whichis added to enhance the tactile feel of the web being printed or sprayedin a manner described above.

[0259] More specifically the DC 8600 may be included as part of thelotion to improve the tactile characteristics of the facial tissue.Since the DC 8600 may have a trace fragrance itself, the carrier systemdescribed in FIG. 17 may be utilized to improve the fragrance of thefinal product.

[0260]FIG. 17 also illustrates that in one embodiment of the inventionthe carrier and surfactant along with the fragrance and otheringredients such as aloe and vitamin E can be applied to a web ofcellulostic fiber by flexographic means. By utilizing a composition ofapproximately:

[0261] less than 1% by weight of aloe

[0262] less than 1% by weight of vitamin E

[0263] less than 1% by weight of fragrance

[0264] 60% DC 8600

[0265] remainder mineral oil

[0266] and applying same to a facial tissue, it was observed that thetrace substances tended to “stay” with the facial tissues and goodtactile feel was exhibited with the use of the DC 8600 as describedabove.

[0267]FIG. 18 illustrates specific results observed utilizing the methoddescribed in FIG. 17.

[0268] Various embodiments of the invention have now been described indetail. Since changes in and/or additions to the above-described bestmode may be made without departing from the nature, spirit or scope ofthe invention, the invention is not to be limited to said details.

We claim:
 1. A composition for cellulostic fibers comprising aminosilicone.
 2. A composition as claimed in claim 1 wherein saidcomposition is essentially anhydrous.
 3. A composition as claimed inclaim 1 comprising of: (a) about 18.8% by weight of amino silicone (b)about 18.8% by weight of dimethicone co-polyol (c) about 18.8% by weightof silanol functional fluid (d) about 18.8% by weight of white mineraloil (e) remainder polypropoxylated stearyl alcohol.
 4. A composition asclaimed in claim 1 comprising of: (a) about 18.8% by weight of aminosilicone (b) about 18.8% by weight of dimethicone co-polyol (c) about18.8% by weight of silanol functional fluid (d) about 18.8% by weight ofwhite mineral oil (e) about 25% by weight of polypropoxylated stearylalcohol.
 5. A composition as claimed in claim 1 comprising: (a) of about60% by weight of a diamino-functional silicone polymer (b) of about 40%polypropoxylated stearyl alcohol.
 6. A composition as claimed in claim 5wherein said diamino-functional silicone has a viscosity of about 800 to5000 centipoise and a non-volatile content of 95%.
 7. A composition forcellulostic fibers comprising: (a) polydimethylsiloxane (b) an effectiveamount of polyoxygenated chains to impart hydrophilicity to saidpolydimethysiloxane; (c) hydrocarbon fatty alcohol radicals.
 8. Acomposition as claimed in claim 6 comprising DC8600.
 9. Tissue papercomprising: (a) cellulostic fibers (b) an effective amount of aminosilicone so as to impart an improved hand feel which is recognized bymore than fifty percent 50% of people who compare the coated tissuepaper with its substrate comprised of plain creped tissue paper. 10.Tissue paper as claimed in claim 9 wherein: (a) said cellulostic fiberscomprise of approximately (i) 55% by weight of bleached eucalyptus pulp(ii) 45% by weight bleached northern softwood kraft pulp.
 11. Tissuepaper as claimed in claim 9 wherein said amino silicone is included in alotion comprising of about: (a) 18.8% by weight of amino silicone (b)18.8% by weight of dimethicone co-polyol (c) 18.8% by weight of silanolfunctional fluid (d) 18.8% by weight of white mineral oil (e) remainderpolypropoxylated stearyl alcohol.
 12. Tissue paper as claimed in claim 9wherein said amino silicone is included n a lotion comprising of about:(a) 60% by weight of a diamino-functional silicone polymer (b) 40% byweight of polypropoxylated stearyl alcohol.
 13. Tissue paper comprising:(a) cellulostic fiber (b) a hydrophilic softener comprising: (i) aneffective amount of polydimethylsiloxane PDMS to impart flexibility andsmoothness for improved drape and softness to the touch (ii) aneffective amount of polyoxygenated chains to impart hydrophilicity (iii)an effective amount of hydrocarbon fatty alcohol radicals to impartsmoothness for improved handfeel. (iv) an effective amount of free aminofunctional groups attached to said polymers including PDMS to enhancetensile strength to tissue papers for wet and dry uses.
 14. A method ofproducing tissue paper by applying to a web of cellulostic fibers alotion comprising of about: (a) 18.8% by weight of amino silicone (b)18.8% by weight of dimethicone co-polyol (c) 18.8% by weight of silanolfunctional fluid (d) 18.8% by weight of white mineral oil (e) remainderpolypropoxylated stearyl alcohol.
 15. A method as claimed in claim 14wherein said lotion is applied from the group comprised of spraying,flexographic printing and rotogravure printing.
 16. A method as claimedin claim 15 wherein said lotion is applied to said web by flexographicprinting, said web moving at a rate of about 300 to 600 feet per minuteand wherein from about 0.1% to 13% by weight of said lotion is added tosaid web.
 17. A method as claimed in claim 16 wherein said lotion has aviscosity of between 10 to 4,500 centipoise.
 18. A method of producingtissue paper by applying a web of cellulostic fibers to a lotioncomprising of about: (a) 60% by weight of a diamino-functional siliconepolymer (b) 40% by weight of polypropoxylated stearyl alcohol.
 19. Amethod as claimed in claim 18 wherein said lotion is applied from thegroup comprised of spraying, flexographic printing and rotogravureprinting.
 20. A method as claimed in claim 19 wherein said lotion isapplied to said web by rotogravure printing at a rate of 300 to 2000feet per minute.
 21. A method as claimed in claim 20 wherein said lotionis applied to one side of said web.
 22. A method as claimed in claim 21wherein said lotion add on to said web is approximately 3 to 4% of webweight.
 23. A method as claimed in claim 22 wherein said rotogravureprinting is operated at a print impression roll load of up to 225 poundsper inch.
 24. A method of producing tissue paper by applying to a web ofcellulostic fibers a DC 8600 hydrophilic softener.
 25. A method asclaimed in claim 24 wherein said DC 8600 hydrophilic softener istopically applied to said web from about 0.05% to 25% by weight ofhydrophilic softener to predominantly dry paper fibers.
 26. A method asclaimed in claim 25 wherein said DC 8600 hydrophic softener is topicallyapplied from about 0.1% to 15% by weight.
 27. A method as claimed inclaim 24 wherein said DC 8600 hydrophilic softener is applied by pulpingfrom about 0.1% to 1.0% by weight of air dry fibers.
 28. A method asclaimed in claim 27 wherein said pulping comprises mixing approximately56% by weight of bleached acacia hardwood pulp and approximately 44% byweight of BNSK.
 29. A method as claimed in claim 28 wherein said DC8600hydrophilic softener is applied by pulping at approximately 0.5% byweight of air dry pulp fibers.
 30. A method as claimed in claims 25, 26,27 and 28 wherein said DC8600 hydrophilic softener to maintain and/orimprove the tensile strength of paper tissues for wet and dry uses. 31.Tissue paper comprising: (a) cellulostic fibers (b) a carrier for tracesubtances, fragrances, vitamin E and its derivatives, aloes and/orcolouring agents.
 32. Tissue paper as claimed in claim 31 wherein saidcarrier includes microcapsules having a size of approximately 30microns.
 33. Tissue paper as claimed in claim 31 wherein said carrier isselected from the group comprising food grade mineral oil andpolyethylene glycol.
 34. Tissue paper as claimed in claim 33 whereinsaid carrier further includes DC
 8600. 35. Tissue paper as claimed inclaim 34 wherein said fragrance comprises aromatic chemicals andessential oils such as menthol, eucalyptus oil, camphor gum, vanilla andthe like.
 36. Tissue paper as claimed in claim 35 comprising of about 4to 10 parts carrier to 1 part fragrance.
 37. Tissue paper as claimed inclaim 36 wherein said carrier for trace substances, fragrance, vitamin Eand/or aloe comprise approximately: (a) less than 1% by weight of asubstance selected from the group of aloe and/or aloe vera gel, aloeextract whether as an oil or solution in water or powder (b) less than1% by weight of a substance selected from the group of vitamin E,vitamin E acetate, mixed tocopherols (c) less than 1% by weight of acolouring agent from the group of microcapsules, microspheres, opticalbrighteners and coloured pigment means for colouring papers (d) 60% byweight DC 8600 (e) remainder food grade mineral oil.